Re: Docking in current
I keep my boat in the Columbia River, so I have to deal with this every day.
In any kind of current, it's just about possible to back into an "uphill" slip without some chance of getting pinned. And, my boat is a very maneuverable J/42.
The problem is that you're very vulnerable for the few seconds between when your transom passes the end of the finger pier, and when your pivot point passes. If a cross-current happens any time during those 3 or 4 seconds, you can't accelerate out of there fast enough and you're going to get pinned.
If there's a way to avoid this, I haven't discovered it. I eventually gave up on the slip and switched to a "downhill" slip.
I think you're stuck with waiting for the flood.
Or, using warps.